There is nothing more important than the safety of our children!!!! This harness is designed in a professional manufacturer with guarantees of product quality and high quality material, the safety harness is made of eco-friendly polyester belt and button, with metal adjustable buckle. It is very easy to use, just slide and adjust the red strap to the back of the seat (does not interfere at all with the people sitting behind), adjust the black shoulder straps according to the height of the child and thread the aircraft belt through of the shoulder strap holes (comes with instructions). It assembles and disassembles in a minute and its weight is very light, the child can take it or store it anywhere since it does not take up anything, it eliminates the hassle of carrying bulky car seats at the airport it is designed for children from 1 years old and up to 40 inches in height and weight from 22 to 44 pounds and for greater safety our product includes a 4.92-foot anti-loss for other activities and always be in sight of our children. We take our job very seriously. Anything, do not hesitate to contact us.